Secondary lead fixing and arranging structure of transformer and application thereof

Abstract

The utility model provides a kind of secondary side lead fixing and arrangement structure and its application transformer, it is related to transformer technical field, a kind of secondary side lead fixing and arrangement structure, including several groups of horizontal arrangement secondary side terminal and lead module, lead module includes several groups of secondary side lead, several secondary side leads of same direction different groups are arranged in layers by preset height difference, and several secondary side leads of same group different directions are misaligned arrangement by preset depth difference.The secondary side lead fixing and arrangement structure, when operating, first, the secondary side lead of same direction different groups in lead module is arranged and wired by height difference, then the secondary side lead of same group different directions is misaligned arrangement by depth difference, then the depth arrangement of the secondary side lead of greater internal pressure difference is adjusted separately, so that all secondary side leads are physically isolated, avoid mutual interference between secondary side leads, prevent the occurrence of cross and overlapping between secondary side leads.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and more specifically, to a transformer with a secondary side lead fixing and arrangement structure and its application. Background Technology

[0002] With the rapid development of new energy industries such as energy storage, wind power, and solar energy, transformers, as core equipment for energy transmission and conversion, are facing increasing demands in terms of performance, economy, and compatibility with downstream supporting equipment. To facilitate the connection of downstream equipment used with transformers, the output terminals on the secondary side of transformers have gradually shifted from the traditional vertical arrangement to a horizontal arrangement.

[0003] However, the coil output positions of conventional transformers still maintain a vertical design, resulting in an exceptionally complex secondary side lead routing path, prone to lead crossings and overlaps. Simultaneously, the limited installation space between different sections within the transformer means that even after lead arrangement is completed, the distance between adjacent leads is often too close. Conventional solutions to this problem are either "manually raising the leads" or "adding extra insulation material to strengthen insulation." However, "manually raising the leads" cannot guarantee that the preset lead spacing will be maintained throughout transportation and long-term operation. "Adding extra insulation material to strengthen insulation" significantly increases the cost of insulation materials. Furthermore, neither method completely eliminates the risk of lead collisions and breakdowns, leading to increased product rework rates and affecting the long-term stable operation of the transformer.

[0004] Based on the shortcomings of the existing technology, there is an urgent need for a fixed and arranged structure that can adapt to the horizontal arrangement of terminals on the secondary side, avoid lead wire crossing and overlap, and stably maintain the lead wire spacing. Utility Model Content

[0005] The present invention aims to solve the problem of lead wire crossing and overlapping and the difficulty in maintaining spacing caused by the mismatch between the horizontally arranged terminals on the secondary side of the existing transformer and the vertical coil output.

[0006] To solve the above problems, this utility model provides a secondary side lead fixing and arrangement structure, including several groups of horizontally arranged secondary side terminals and lead modules; The lead module includes several groups of secondary side leads, and the secondary side leads in each group are in different directions. The secondary side leads in different groups with the same direction are arranged in layers by a preset height difference, and the secondary side leads in different directions in the same group are arranged in a staggered manner by a preset depth difference, so that all the secondary side leads form an independent arrangement structure that does not contact each other in space. A spacer is provided between two adjacent secondary side leads to maintain the spacing between them.

[0007] The secondary side lead fixing and arrangement structure provided by this utility model has the following beneficial effects compared with the prior art: The secondary side lead fixing and arrangement structure operates by first arranging the secondary side leads of the same direction but different groups in the lead module according to the height difference, then arranging the secondary side leads of the same group but different directions according to the depth difference, and then adjusting the depth arrangement of the secondary side leads with larger internal pressure difference individually, so that all the secondary side leads form an independent arrangement structure that does not contact each other in space. This structure physically isolates all the secondary side leads, avoids mutual interference between the secondary side leads, and prevents the occurrence of crossing and overlapping between the secondary side leads.

[0008] By isolating adjacent secondary side leads with spacers and binding the secondary side leads to corresponding positions, the spacing between secondary side leads at different positions can be maintained. Compared with existing technologies, this can reduce the risk of lead collisions and breakdowns, thereby improving product performance.

[0009] Furthermore, each group of secondary side leads includes a first lead, a second lead, and a third lead, wherein the first lead, the second lead, and the third lead are not oriented in the same direction.

[0010] Furthermore, the spacer includes a support bar, and fixing blocks are fixedly installed at both ends of the support bar.

[0011] Furthermore, the fixing block has a slot.

[0012] Furthermore, the secondary side lead is engaged with the slot.

[0013] Furthermore, the cross-sectional shape of the secondary side lead is adapted to the shape of the slot.

[0014] Furthermore, the secondary side lead wire is fixed to the fixing block by a binding member.

[0015] Furthermore, the binding element is an insulating binding tape or an insulating rope, and the binding element is selected from one of glass fiber reinforced insulating tape and polyimide insulating tape.

[0016] Furthermore, the spacer is made of an insulating material, which is selected from one or a composite material of epoxy resin and phenolic resin.

[0017] A transformer includes several sets of secondary windings and a secondary lead fixing and arrangement structure as described above. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the longitudinal arrangement of secondary side terminals in the prior art; Figure 2 This is a schematic diagram of the horizontal arrangement of secondary side terminals in the prior art; Figure 3 This is a schematic diagram of a transformer with a secondary side lead fixing and arrangement structure and its application according to an embodiment of the present utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 for Figure 5 A schematic diagram of the intermediate spacer.

[0019] Explanation of reference numerals in the attached figures: 1. Secondary coil; 2. Lead module; 21. First lead; 22. Second lead; 23. Third lead; 3. Secondary terminal; 4. Spacer; 41. Support bar; 42. Fixing block; 43. Slot. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, in the attached diagram, the X-axis represents the vertical direction, that is, the front-to-back position, and the positive direction of the X-axis (that is, the direction the arrow points to) represents the front, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the back; in the attached diagram, the Y-axis represents the horizontal direction, that is, the left-to-right position, and the positive direction of the Y-axis (that is, the direction the arrow points to) represents the left, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the right; in the attached diagram, the Z-axis represents the vertical direction, that is, the up-to-down position, and the positive direction of the Z-axis (that is, the direction the arrow points to) represents the up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the down.

[0024] It should also be noted that the aforementioned X-axis, Y-axis and Z-axis are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0026] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0027] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0028] See Figures 1-2 With the increasing emphasis on product performance and economy in engineering production, and to facilitate connection with downstream equipment used with transformers, the secondary side terminals 3 of transformers have gradually shifted from a longitudinal arrangement (each group of secondary side terminals 3 is arranged along the Z-axis) to a transverse arrangement (each group of secondary side terminals 3 is arranged along the X-axis). Currently, conventional transformer coil leads still exit longitudinally (Z-axis), but need to be connected to the secondary side terminals 3 arranged along the X-axis, making the secondary side lead routing extremely complex. Furthermore, the distance between the secondary side leads in this structure is prone to being too close. Therefore, how to plan the secondary side lead layout and fixation to ensure transformer performance stability has become an important issue.

[0029] The inventors discovered that when the secondary side terminals 3 of a transformer are arranged longitudinally, the method of directly connecting the leads to the terminals laterally is no longer suitable for the wiring method of transformers with terminals arranged laterally. Using this approach to wiring will cause the leads to directly cross and overlap, making it easy for the transformer leads to break down during operation.

[0030] Furthermore, the distance between the major sections of a transformer is limited, and even after the lead wires are arranged, there will still be situations where the leads are too close together. The conventional approach is to manually adjust and raise the lead wires at these close points or to use insulating materials to further enhance the insulation. This increases the cost of the insulation materials for the leads, and manually raising the lead wires cannot guarantee that the preset distance will be maintained for a long time during subsequent transportation and operation.

[0031] See Figures 3-5A secondary side lead fixing and arrangement structure according to an embodiment of the present invention includes several groups of horizontally arranged secondary side terminals 3 and lead modules 2.

[0032] The lead module 2 includes several groups of secondary side leads, and the secondary side leads in each group are in different directions. The secondary side leads in different groups with the same direction are arranged in layers by a preset height difference, and the secondary side leads in different directions in the same group are arranged in a staggered manner by a preset depth difference, so that all secondary side leads form an independent arrangement structure that does not contact each other in space.

[0033] See Figure 6 A spacer 4 is provided between two adjacent secondary side leads. The spacer 4 is used to maintain the spacing between two adjacent secondary side leads.

[0034] In this embodiment, each group of secondary side terminals 3 is provided with three terminals, and the three secondary side terminals 3 in each group correspond to secondary side leads of different directions.

[0035] During operation, the secondary side lead fixing and arrangement structure first arranges the secondary side leads in the same direction but different groups in lead module 2 according to their height difference, and then arranges the secondary side leads in the same group but different directions according to their depth difference. Then, the depth arrangement of the secondary side leads with larger internal pressure differences is adjusted individually, so that all the secondary side leads form an independent arrangement structure in space that does not contact each other. This structure physically isolates all the secondary side leads, avoiding mutual interference between them and preventing crossings and overlaps.

[0036] By isolating two adjacent secondary side leads with spacer 4 and binding the secondary side leads to the corresponding positions, the spacing between secondary side leads at different positions can be maintained. Compared with the existing technology, this can reduce the risk of lead collision and breakdown, thereby improving product performance and enabling the transformer to operate stably for a long time.

[0037] Optionally, see Figures 4-5 Each group of secondary side leads includes a first lead 21, a second lead 22, and a third lead 23. In each group of secondary side leads, the first lead 21, the second lead 22, and the third lead 23 are not oriented in the same direction.

[0038] In this embodiment, in each group of secondary side leads, different colors are used in the figure to indicate secondary side leads in different directions.

[0039] See Figure 5 Several secondary side leads in the same direction but different groups are leads of the same color, taking the first lead 21 as an example. Several first leads 21 are arranged in layers with a preset height difference. Correspondingly, several second leads 22 and several third leads 23 are also arranged in layers with a preset height difference.

[0040] See Figure 5 At point C, several secondary side leads in different directions within the same group are leads of different colors. Taking the group selected at point C as an example, the first lead 21, the second lead 22, and the third lead 23 in the same group are arranged in a staggered manner with a preset depth difference.

[0041] By using a layered arrangement based on height differences and a staggered arrangement based on depth differences, all first leads 21, second leads 22, and third leads 23 are arranged independently in space, without contacting each other. It should be noted that for secondary side leads with large internal pressure differences, their arrangement depth needs to be adjusted separately.

[0042] Optionally, the spacer 4 is made of an insulating material, which is selected from one or a composite material of epoxy resin and phenolic resin. The spacer 4 ensures insulation between the secondary-side leads. Furthermore, the spacer 4 provides spaced isolation between the secondary-side leads, which is more economical in terms of material usage and reduces material costs compared to fully wrapping all secondary-side leads with insulating paper.

[0043] Optionally, see Figures 5-6 The spacer 4 includes a support bar 41, with fixing blocks 42 fixedly installed at both ends of the support bar 41. The fixing blocks 42 have slots 43. The secondary side lead wire is engaged with the slots 43.

[0044] Each spacer 4 is provided with at least one support bar 41. When more than one support bar 41 is provided, two adjacent support bars 41 share a fixing block 42.

[0045] In this embodiment, the secondary side lead wire is inserted into the slot 43 of the corresponding fixing block 42, and the support bar 41 provides physical distance between two adjacent secondary side leads, reducing the risk of secondary side lead wires being punctured, improving the performance and economy of the product, and enabling the transformer to operate stably for a long time.

[0046] Optionally, see Figure 6 The cross-sectional shape of the secondary side lead wire is adapted to the shape of the slot 43.

[0047] Specifically, when the secondary lead wire uses a circular cross-section, the slot 43 uses an arc-shaped slot; when the secondary lead wire uses a rectangular cross-section, the slot 43 uses a rectangular slot. Adapting the cross-sectional shapes of the two not only improves operational convenience but also makes the connection more stable, securing the secondary lead wire more firmly to the fixing block 42. This effectively reduces the risk of the secondary lead wire detaching from the slot 43 and colliding during transportation or operation due to bumps or vibrations.

[0048] Optionally, the secondary lead wire is fixed to the fixing block 42 by a binding device. The binding device is an insulating binding tape or an insulating rope, and the binding device is selected from one of glass fiber reinforced insulating tape and polyimide insulating tape.

[0049] In this embodiment, the secondary side lead wire is reinforced and fixed on the fixing block 42 by the use of a binding member, thereby improving the connection stability of the secondary side lead wire.

[0050] See Figure 3 Another embodiment of the present invention provides a transformer, including several sets of secondary coils 1 and the secondary lead fixing and arrangement structure as described above. The secondary leads are led out from the secondary coils 1 and connected to the secondary terminals 3.

[0051] Although the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A secondary side lead fixing and arrangement structure, characterized in that, It includes several sets of horizontally arranged secondary side terminals (3) and lead wire modules (2); The lead module (2) includes several groups of secondary side leads, and the secondary side leads in each group are in different directions. The secondary side leads in different groups in the same direction are arranged in layers by a preset height difference. The secondary side leads in different directions in the same group are arranged in a staggered manner by a preset depth difference, so that all the secondary side leads form an independent arrangement structure that does not contact each other in space. A spacer (4) is provided between two adjacent secondary side leads, and the spacer (4) is used to maintain the spacing between two adjacent secondary side leads.

2. The secondary side lead fixing and arrangement structure according to claim 1, characterized in that, Each group of secondary side leads includes a first lead (21), a second lead (22) and a third lead (23). In each group of secondary side leads, the first lead (21), the second lead (22) and the third lead (23) are not in the same direction.

3. The secondary side lead fixing and arrangement structure according to claim 1, characterized in that, The spacer (4) includes a support bar (41), and a fixing block (42) is fixedly installed at both ends of the support bar (41).

4. The secondary side lead fixing and arrangement structure according to claim 3, characterized in that, The fixing block (42) has a slot (43).

5. The secondary side lead fixing and arrangement structure according to claim 4, characterized in that, The secondary side lead is engaged with the slot (43).

6. The secondary side lead fixing and arrangement structure according to claim 5, characterized in that, The cross-sectional shape of the secondary side lead is adapted to the shape of the slot (43).

7. The secondary side lead fixing and arrangement structure according to claim 6, characterized in that, The secondary side lead wire is fixed to the fixing block (42) by a binding member.

8. The secondary side lead fixing and arrangement structure according to claim 7, characterized in that, The binding component is an insulating binding tape or an insulating rope, and the binding component is selected from one of glass fiber reinforced insulating tape and polyimide insulating tape.

9. The secondary side lead fixing and arrangement structure according to claim 1, characterized in that, The spacer (4) is made of insulating material, which is selected from one or two composite materials of epoxy resin and phenolic resin.

10. A transformer, characterized in that, It includes several sets of secondary side coils (1) and the secondary side lead fixing and arrangement structure as described in any one of claims 1-9.

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